光学遥感大气气溶胶特性

本文提出一种光学遥感大气气溶胶特性的新方法。由多波段望远光度计观测的太阳直接辐射和太阳所在地平纬圈天空亮度的相对分布值,同时反演出气溶胶散射相函数,整层大气的光学厚度随波长的变化,进而用“库”方法反演出气溶胶粒子的尺度谱和折射率的实部和虚部。对比平行观测的结果表明,光学遥感方法所得的结果是可信的。本文同时也讨论了北京地区大气气溶胶的光学参数在不同季节的变化。

INVERSE OF THE PROPERTY OF ATMOSPHERIC AEROSOLS BY OPTICAL REMOTE SENSING

A new approach was proposed for optical remote sensing of the atmospheric aerosols.A multiwavelength telephotometer was used to measure the direct solar radiation and the sky light on the solar almucatar.Both scattering phase fuction and the atmospheric optic depth were inverted simulaneously.A "data base maching" method was used to retrieve the size distribution and refractive indices of atmospheric aerosols.Simultaneous observation of optical remote sensing and sampling has been done to check the method.The agreement of the results shows that the approcah proposed is reasonably correct and useful.